Med Biol Eng Comput - Prosthetic component segmentation with blur compensation: a fast method for 3D fluoroscopy.

Tópicos

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Resumo

A new method for prosthetic component segmentation from fluoroscopic images is presented. The hybrid approach we propose combines diffusion filtering, region growing and level-set techniques without exploiting any a priori knowledge of the analyzed geometry. The method was evaluated on a synthetic dataset including 270 images of knee and hip prosthesis merged to real fluoroscopic data simulating different conditions of blurring and illumination gradient. The performance of the method was assessed by comparing estimated contours to references using different metrics. Results showed that the segmentation procedure is fast, accurate, independent on the operator as well as on the specific geometrical characteristics of the prosthetic component, and able to compensate for amount of blurring and illumination gradient. Importantly, the method allows a strong reduction of required user interaction time when compared to traditional segmentation techniques. Its effectiveness and robustness in different image conditions, together with simplicity and fast implementation, make this prosthetic component segmentation procedure promising and suitable for multiple clinical applications including assessment of in vivo joint kinematics in a variety of cases.

Resumo Limpo

new method prosthet compon segment fluoroscop imag present hybrid approach propos combin diffus filter region grow levelset techniqu without exploit priori knowledg analyz geometri method evalu synthet dataset includ imag knee hip prosthesi merg real fluoroscop data simul differ condit blur illumin gradient perform method assess compar estim contour refer use differ metric result show segment procedur fast accur independ oper well specif geometr characterist prosthet compon abl compens amount blur illumin gradient import method allow strong reduct requir user interact time compar tradit segment techniqu effect robust differ imag condit togeth simplic fast implement make prosthet compon segment procedur promis suitabl multipl clinic applic includ assess vivo joint kinemat varieti case

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